·“它只是一只毫无花纹的普通玻璃杯”的英文表达为？

It's just a normal stripeless glass cup.

这句话考察的是En中形容词顺序，一般情况下为 Osacomu
O: opinion 评价
s: shape 形状
a: age 年龄
c: color 颜色
o: origin 来源
m: material 材料
u: usage 用途

It's just a plain glass without any texture.

这里的花纹英语是texture

It is only a common glass without the texture

It is a no patterns ordinary glass

This is an ordinary glass without any decorative pattern.

It is a common glass without any patterns